Fabric belting



July 21, 1931'.

I W; ALEXANDER FABRIC BELTING Filed Feb. 16, 1927 i7" dew %(i/azwzde/' fiF E'nnRIcK wrLrRIn ALE ANDER; or swim, WALES, Assl'enonor A V fApplicationgfiled February 16,19

. ,l inventioni relates to the construction 7 of fabric belting,ieither of the driving or'conveyingtypes. I v It has been previously proposedsto' form fabric belting with slight flutings, corruga stions orridges order to allo'w a, free escape r V of the air whichiform's under side ofnthe belt and the driving pulley and lessens the grip between thesesurfaces.

a cushion between the Belting is alsoknown inwhichth'e fabric isprovided withan outer covering of rubber,

but such. covering has usually been driving beltswithv aithicknes's .of rubber or ;rubber compounds 'Qwhichis pressed on to the surfaceof the fabric'to provi-deflutings, cor- 1 rugations 'or the'like in order toincrease the I adherence between'the belt and the contact surfaces and reducethe slip;

1 According to the o present invention, the covering of rubber or rubber compound which wis of-relatively large and uniformthickness is, for the purpose'of obtainingi'a more secure connection between the coveringjand the ;fabric,j provided on the surfacesnextto the T 'Ji'fabric-with projections or corrugations im is pressed into the surface of thefabric and 7 formingon thelcxterior surfaces correspond ing fluting's or: grooves. When such belting ro LEWIS ,& ri on L ITED, or ma a, WALES 2 7;: Serial K0 pl only in the form of a'thin plainsheet;

It has beenproposed to cover the, fabric of 1 15" FA RIQ Bumme 168,711; an were Bfi m'mmh 25, 1926.

rialof the fabric and leaving on jthe cute;

surface both directions, or the-rubber coveringmay uted :in any suitable manner.

The invention'may be applied either to beltingbuilt up in plyform or to the solid woven; Ype. I

thus described sa d invention and the best means Ivknow of 1 carrying'fthesame into practical'efiect, I

claim z- A belt of *plainfabric provided on one face with afcovering of rubber of relativelyilarge and uniformthickness,which is provided on 1 H I thesurface next to the fabric with projections impressed intothe surface of the fabric and i i h forming on the external surfacecorrespond mg recesses.v

name: to this specification;-

a 1 F. w. ALEXANDER/ i T V of .isusedas a econv'eyer for hotashes 'or other,v

' "I substance at'a high temperature there isa suf- I ficientlayerofheat insulating material to prevent anydama ge to the fabric.

"It has also been proposed to cover a fabric belting with aithin' fluted sheet of balataybut as this material will only stand atemperature of about 95 FI it cannotbeused for many I purposes for whichrubberor rubbercomi pounds, whichcan be raised to about 27091 without changeisperfectly adapted.

i Inthe accompanying drawingswhich rep; if

invention 'Fig lis acrosssectionand v Figs. 2' and 3fpart' sections on-a larger 'resentjan examplefof a-belt accor-ding tothe.

1 scale; showing respectively a flute'dfrubber "covering on one orboth sidesofa belt.

' A is Ethefabric -Bthe rubber covering, G

Q the inner projections impressed into the matethe nature of my in n. fiestimonyiwhereof I HALr simian 1 corresponding flutings or grooves. '1 v p The flutings may be either in the longitudis nalcrtransverse direction of the belt, or in s Q r '5511- beprovided with raised projections distrib- 

